Spokeshave



(No Model.)

A. CHAPMAN.

sPoKBsHAvE. No. 294,197. Patented Feb. 26, 1884.

WITNESSES i INVBNTOR:

, W3@ BY i ATTORNEYS.

UNITED STATES PATENT OFFICE.

ADDISON E. CHAPMAN, OF .OLEAN, NEW YORK.

SPO'KESHAVE.

SPECIFICATION forming part of Letters Patent No. 294,197, dated February26, 1884. Application iled September 11, 1883. (No model.)

To all whom it may concern:

Be it known that I, ADDIsoN E. CHAPMAN, a citizen of the United States,residing at Olean, in the county of Cattaraugus and State of New York,have invented a new anduse ful Improvement in Spokeshaves, of which thefollowing is a specification.

This invention relates to that class of spokeshaves in which a castframe or handle is used to carry a blade and fastening devices.

Heretofore the blades of metallic spoke shaves have usually been clampedin place in the body by means of one or more wedges held by twoset-screws, one at each end of the blade. This necessitated the workingof two screws to secure the blade or to remove it. It also preventedinserting the spokeshave into holes and thin places on account of thethumb-screws protruding at both edges of the blade. n

The object of my invention is to obviate these objections and to providea fastening device which shall securely hold the blade in place, yet maybe quickly loosened to release the blade.

To this end my invention consists'in a haudle having a recess to receivea blade, and a wedge of peculiar shape, and a screw peculiarly shapedand located therein, as hereinafter described and claimed, referencebeing had to the accompanying drawings, in which- Figure l is a rearview, Fig. 2 is a top view, and Fig. 3 is a transverse vertical section,of my spokeshave.

A represents the stock of the spolreshave,

- usually cast metal, formed with an aperture,

B, whose lower side, b, is plane or laterally concave, serving as theseat for the blade G.

D is the wedge for holding the vblade in place by resting flat upon thetop thereof, and being itself held down at its two ends. For thispurpose the two ends of said wedge are inclined or wedging in thickness,one end entering under a wedging-ledge, c, of the stock and the otherend held by a tapering pointed screw, E. This screw is threaded into thestock A, and being bluntly tapered, its action upon 'the wedge isthreefold. Its first action is to press the wedge against the oppositebearing, c, which being wedging, as stated, begins binding on the blade.As soon as the wedge becomes seated, so that it will no longer slideendwise from the screw, then the continued action of the screw binds theadjacent end thereof down upon the blade, thus firmly securing the samein place. The screw being right-hand threaded and located at the righthand of the blade when the latter faces from you, the revolution of thescrew impinging against the end of the Wedge has a creeping effect todraw that end of the wedge laterally into the stock. Then the motion ofthe screw is reversed, each efect is reversed, the first tendency beingto loosen the wedge and the second to work it out of the stock. Thus theaction of each part is in all respects toward the desired end. Thestock, blade, and wedge Inay in other respects be of any desired form.The front side of the wedge will usually be thinned to an edge to turnthe shavings from the blade over it through the aperture B. Yet shouldit be desirable to make the wedge bear only upon the two ends of theblade and raise its middle to allow shavings to pass under, still myIneans of fastening the same by its ends will answer the same purpose.

I am aware that a spolreshave having its blade held directly by awedging-ledge of the handle or stock at one end, and the blade leftunsupported between these resting-points, is not new, and I do not claimthe saine.

Vhat I claim as my invention, and wish to sec-ure by Letters Patent, is-

The stock of a spokeshave, having an aperture to receive the blade and abed for the same to rest on throughout its length7 and a wedging-ledgeat one end of said aperture, in combination with a tapering pointedscrew in the stock at the opposite end of said aperture, and a wedgeinclined at both ends, as shown and described, whereby a blade may beheld, as specified.

ADDISON E. CHAPMAN.

Witnesses:

E. C. CLEVELAND, ROBERT H. WILEUE.v

